Regarding the subscription billing. It is not at all compulsory. If you think it's "shady business" then please don't join. We sell all the videos through the shopping cart when they are ready. The subscription was something that was asked for by our customers so that they didn't have to pay full price for each new video we create. I know it's not perfect, but always a work in progress.
We also warn people via email before any charge is coming up.

I have the subscription and I'm happy with the way it works. A lot of places send you an email AFTER you've gotten the new charge. There isn't really much SA can do other than not offer the service, and that'd just piss off a different group of people.

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I told my kids, "Someday, you'll have kids of your own." One of them said, "So will you."
-- Rodney Dangerfield.